Sports Medicine Fellowship Faculty
Nathan Cardoos, MD, CAQSM
Dr. Cardoos is an assistant professor in family medicine and primary care sports medicine. He serves as both the director of the Boston University Primary Care Sports Medicine Fellowship and the medical director of the Ryan Center for Sports Medicine. Nathan completed his undergraduate degree at Williams College and then attended medical school at the University of Chicago Pritzker School of Medicine. In medical school, he was elected by his peers to the Gold Humanism Honor Society, an organization that recognizes humanistic patient care and leadership in medicine. He completed residency at the Tufts University Family Medicine Residency Program at Cambridge Health Alliance, where he received awards for his dedication to patient care and for teaching. He then completed a primary care sports medicine fellowship at the University of Massachusetts. Nathan joined the Department of Family Medicine at BMC in August 2015 and initially worked as a primary care provider in addition to his sports medicine practice until being named fellowship director. At the Ryan Center for Sports Medicine, he provides care to sports medicine patients and has a special interest in sports ultrasound. Using ultrasound guidance, he performs procedures such as corticosteroid injections, viscosupplementation, platelet rich plasma therapy, tenotomy/needle fenestration, aspiration and barbotage. He also performs extracorporeal shockwave therapy/EPAT. Nathan serves as a team physician for Boston University. He is a member of the American Medical Society for Sports Medicine and serves on the education and fellowship committees.
Alysia L. Green, MD, CAQSM
Assistant Fellowship Director
Dr. Green was born and raised in Michigan, receiving her Bachelors of Science in biology from the University of Michigan. She is a proud Michigan Alumnae and die-hard Michigan fan. She attended Wayne State School of Medicine in Detroit, MI, where she received her Doctor of Medicine and completed her residency in family medicine at Case University-University Hospitals of Cleveland. Following residency, she went on to do a sports medicine fellowship at Michigan State University. Dr. Green is a board-certified family physician with a certificate of added qualification in sports medicine. She is an assistant professor of family medicine/primary care sports medicine, as well as the assistant director of the primary care sports medicine fellowship. She works at the Ryan Center for Sports Medicine, BMC’s orthopedic clinic, South Boston Community Health Center, and serves as the head team physician at Boston University. She is a former head team physician for USA Gymnastics. Special interests include medical education, the female athlete, concussion and infectious diseases.
Christopher Ma, MD, CAQSM
Dr. Ma is an assistant professor in primary care sports medicine. He received his bachelors in biomedical engineering at Syracuse University. He attended SUNY Upstate Medical University for medical school. He completed a general surgery internship at Temple University Health System and family medicine residency training at University of Vermont Medical Center. He then completed a fellowship in primary care sports medicine at Boston University where he joined the faculty in January 2020. He currently sees patients at the Ryan Center for Sports Medicine, Winthrop Specialty Clinic, and BU student health services. He is also a team physician for BU and Boston Public Schools. Clinical interests include non-operative fracture management, tendon pathology, injection therapy such as corticosteroid, viscosupplementation, and platelet rich plasma, and procedures such as tenotomy, aspiration and barbotage, and EPAT therapy. Research interests include shoulder and knee biomechanics, musculoskeletal ultrasound, and regenerative medicine and orthobiologics for musculoskeletal pathology.